biology extended essay questions

Best Results From
Yahoo Answers Youtube

From Yahoo Answers

Question:I have to start thinking about my ib extended essay, and i think i'll do it in biology. I have to do an experiment and I want to do something related to plants, but i need a good, solid topic that will get me an A. Honestly, i can't think of anything... any suggestions? The topic should be somewhat advanced, i don't want to do anything on photosynthesis, transpiration, etc. because a majority of experiments related to those topics are well established and proven facts, i want something new and interesting.

Answers:there are many diferent types of plants, all the way around the world. they all have different qualities and are used for many things.
cell structures, investigate the cellullar structures of different species, and what makes them so diferent, what factors or weather conditions influence these diferences that makes plants, hang, grow upward, sideways, climb, grow in water, look into diferent types of plants and species, theres so much about it

Question:So I have nine essays to write over the winter break and I'm down to my last two. This is just one of them. I'll put the entire question (don't freak out, I'm not asking anyone to do it for me), but the reason I have NO idea about any of this is that we have yet to cover this topic in class. I also tried to do some research on it as well and couldn't find much. So please, if anyone's done this question before or has any info to offer up, it would be much appreciated. Here it is:
The following are five examples of symbiotic relationships:
- plant nodules
- digestion of cellulose
- epiphytic plants
- AIDS
- anthrax
I need to choose 4 of the above and...
A) identify the participants involved in the symbiosis and describe the symbiotic relationship, and
B) discuss the specific benefit or detriment, if any, that each participant receives from the relationship.
Really though, I'm struggling with this question. After writing 7 essays already I'm kind of burnt out. Please help if you can.

Answers:wow 9 essays over your holidays?! that sucks
im not totally sure about all of them, but i can maybe help you out a little bit on 2 of them because i recently took a class about viruses and bacteria and how they cause disease
AIDs: the virus is called the human immunodeficiency virus (the late stage of the disease is called AIDs) and viruses are obligate intracellular parasites. They infect human immune system cells (specifically the T helper cells). the virus replicates within the host cell and undergoes antigenic variation, changing its surface glycoproteins meaning that our immune system is not able to recognize the cells in order to destroy them. The virus first causes HIV and progresses to AIDs in humans, the virus is provided with Th cells where it can replicate in and it uses the host's protein synthesis machinery ie. RNA polymerase during its replication cycle
anthrax: humans and bacillus anthracis is the bacterium involved...the relationship? i guess id call it an intercellular parasite. im not sure if i can think of any benefits/detriments for the bacterium but for the humans: spores produced by b. anthracis may be inhaled causing pulmonary lesions and very characteristic black skin lesions, even gastrointestinal lesions are possible
i hope that this has help you out a bit!
good luck

Question:I have to do a project on environmental issues that humans cause on the environment, and write a 2-4 page summary and the options available for fixing the problem. I really want to do a subject that no one else would do, so i chose acid rain, but im not sure if acid rain has enough information to write 2 or 3 pages on the problem it poses, and the options available to fix the problem. Is this is a good subject, and if not, what other subjects are available? (please don't tell me about global warming, or animal extinction, because those topics are way too common)

Answers:yes there is enough info
I am doing a science experiment on something like that ..can some1 help me please
http://answers.yahoo.com/question/index;_ylt=AiTXlUASm0WJsP22wuxUmhbsy6IX;_ylv=3?qid=20080924143210AAr4FA

Question:This is one of the 1999 AP Exam essay question: Biology
Photosynthesis Experiment; The rate of photosynthesis may vary with chances that occur in environment temperature, wavelength of light, and light intensity. using a photosynthesis organism of your choice, choose only one of the three variables (Temperature, wavelength of light, or light intensity) and for this variable.
*Design a scientific experiment to determine the effect of three variable on the rate of photosynthesis for organism;
*Explain how you would measure the rate of photosynthesis in your experiment;
*Describe the results you would expect. Explain why you would expect these results...
Please help me to find what should I include in this essay, or any Ideas?

Answers:To me, the question is asking to do a scientific experiment ( testing the experiment) and find out the effect of the 3 variables on the rate of photosynthesis for an organism; (First body)
How would you measure the rate of photosynthesis in your experiment and Why? For example, days, hours, or weeks. (Second body)
Describe the results you would expect. Explain why you would expect these results. Basically, this to me is saying to make a hypothesis on what the outcome would be. For example, I think the light intensity would increase the rate of photosynthesis for most plants. This example may not be accurate, but explain it in more detail and accuracy. Lastly, explain why you think this would happen. (third body)